Percentage Aptitude Questions Practice Question and Answer
8 Q: P is 20 percent more than Q and Q is 30 percent less than R. If P is 420, then What is the value of R?
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Answer : 2. "500"
Q: Last financial year, a car company sold 41,800 cars. The target is to sell 51,300 cars this year. What percentage would sales have to increase?
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Answer : 1. "
Q: If a number is increased by 30 % and after that it is decreased by 25 % and again it is increased by 25 % then find average change in percentage? (approx.)
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5e8feeef61b7c13fb88fb4be- 122%true
- 219%false
- 310%false
- 432%false
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Answer : 1. "22% "
Q: A reduction of 20% in the price of sugar enables a housewife to purchase 6 kg. more for Rs. 240. What is the original price per kg. of sugar?
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- 2Rs. 18 per kgfalse
- 3Rs.15 per kgfalse
- 4Rs. 10 per kgtrue
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Answer : 4. "Rs. 10 per kg "
Q: If 20% of (A + B) = 30% of (A − B), then what percentage of B is equal to A?
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Answer : 3. "500%"
Q: A shopkeeper bought 240 ton rice. He sold 4/5th is at 37.5% profit, then find at what percentage profit or loss he should sell remaining rice, so as to gain 25% on the whole transaction?
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Answer : 2. "
Q: In a company, there are 75% skilled workers and remaining ones are unskilled. 80% of skilled workers and 20% of unskilled workers are permanent. If number of temporary workers is 126, then what is the number of total workers?
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Answer : 3. "360"
Q: The price of sugar increases by 15%. By what percentage should the consumption of sugar be decreased so that the expenditure on the purchase of sugar remains the same? [Give your answer correct to 2 decimal places.]
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643d140332185cce373eec85- 111.11%false
- 212.5%false
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- 413.04%true
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Answer : 4. "13.04%"
Explanation :
To solve this problem, let's denote:
- Initial price of sugar = P
- Initial quantity consumed = Q
- Initial expenditure = PQ
After the price increases by 15%, the new price becomes 1.15P.
To keep the expenditure constant, the new quantity consumed (let's call it Q') can be calculated using the formula:
New expenditure = New price × New quantity
Setting the new expenditure equal to the initial expenditure:
PQ = (1.15P) * Q'
Now, solve for Q':
Q' = PQ / (1.15P)
Simplify:
Q' = Q / 1.15
Now, let's find the percentage decrease in consumption:
Percentage decrease = [(Q - Q') / Q] * 100
Substituting the value of Q':
Percentage decrease = [(Q - (Q / 1.15)) / Q] * 100
Percentage decrease = [(Q * (1 - 1/1.15)) / Q] * 100
Percentage decrease ≈ [(1 - 0.8696) * 100] ≈ 13.04%
Therefore, the consumption of sugar should be decreased by approximately 13.04% to keep the expenditure on the purchase of sugar the same after a 15% increase in price.